Java实现批量操作Excel的示例详解

@Test
  public void testImportFormFile() {
    String folderPath = "path/testFolder"; //使用你的路径
    File folder = new File(folderPath);
    File[] files = folder.listFiles();
    if (files != null) {
      for (File file: files){
       if(file.isFile() && file.getName().endsWith(".xlsx")){
          Workbook wb = new Workbook();
          wb.open(file.getAbsolutePath());
          Object[][] value = (Object[][]) wb.getActiveSheet().getRange("B3:C6").getValue();
          System.out.println(value[0][1]); //小葡萄
          System.out.println(value[1][1]); //20.0
          System.out.println(value[2][1]); //开发部
          System.out.println(value[3][1]); //610123456789012345
           //添加处理数据的逻辑
        }
      }
    }
  }

@Test
  public void testExportFormFile() {
    String outPutPath = "E:/testFolder";
    //给valueList初始化数据，替换为从数据库，CSV或者JSON等中获取数据。
    ArrayList<Object[][]> valueList = new ArrayList<Object[][]>();
    for (Object[][] value : valueList) {
      Workbook wb = new Workbook();
      wb.getActiveSheet().getRange("B3:C6").setValue(value);
      wb.save(outPutPath + UUID.randomUUID().toString() + ".xlsx");
    }
  }

@Test
    public void testReplaceTemplateFile() {
        String templateFilePath = "test.xlsx";
        Workbook wb = new Workbook();
        wb.open(templateFilePath);
        IRange usedRange = wb.getActiveSheet().getUsedRange();
        //load data
        ArrayList<Object[]> valueList = new ArrayList<Object[]>();
        for (Object[] value : valueList) {
            usedRange.replace(value[0],value[1]);
        }
        wb.save("result.xlsx", SaveFileFormat.Xlsx);
    }

@Test
  public void testCalcFormulaByTemplateFile() {
    String templateFilePath = "E:/testFolder/testFormula.xlsx";
    Workbook wb = new Workbook();
    wb.open(templateFilePath);
	 //``获取特定的值，比如以下
    ArrayList<Object[]> valueList = new ArrayList<Object[]>();
    for (Object[] value : valueList) {
       Object A1Value = value[0];
      Object A2Value = value[1];
      Object result = null;
      wb.getActiveSheet().getRange("A1").setValue(A1Value);
      wb.getActiveSheet().getRange("A2").setValue(A2Value);
      result = wb.getActiveSheet().getRange("A3").getValue();
      System.out.println(result);
    }
  }